Transfering appstore balance

I got €20 on my appstore balance. I already refunded once. Now my genius invention is to transfer this money to an other account... THROUGH GIFT CARD GIFTING. But appearantly that doesn't work, because it then asks me for my payment method stuff... Is there a way to use your appstore balance for giftcards? Maybe doing an inapp purchase in an app which then sends you an itunes giftcard code? Idk share your methods!

(If this is possible without any fees, it would be infinite inapp purchases bro)